Gets the total size of the memory blocks in this.
When not null, offset will contain the offset of the data in the first memory block in
this and maxsize will contain the sum of the size and offset and the amount of
extra padding on the last memory block. offset and maxsize can be used to resize the buffer memory blocks with
resize.
| this |
a Buffer. |
| offset |
a pointer to the offset |
| maxsize |
a pointer to the maxsize |
|
total size of the memory blocks in this. |